48821951 has 4 divisors (see below), whose sum is σ = 48857592. Its totient is φ = 48786312.

The previous prime is 48821911. The next prime is 48821987. The reversal of 48821951 is 15912884.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 48821951 - 2¹⁸ = 48559807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48821911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15680 + ... + 18533.

It is an arithmetic number, because the mean of its divisors is an integer number (12214398).

Almost surely, 2^48821951 is an apocalyptic number.

48821951 is a deficient number, since it is larger than the sum of its proper divisors (35641).

48821951 is a wasteful number, since it uses less digits than its factorization.

48821951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35640.

The product of its digits is 23040, while the sum is 38.

The square root of 48821951 is about 6987.2706402429. The cubic root of 48821951 is about 365.4868114983.

The spelling of 48821951 in words is "forty-eight million, eight hundred twenty-one thousand, nine hundred fifty-one".